*{padding: 0;margin: 0;}
html,body{
    height: 100%;
}
.cp{
    cursor: pointer;
}
ul{
    list-style: none;
}
.h100{
    height: 100%;
}
.tac{
  text-align: center;
}
.pl{
    padding: 12px;
}
.ml{
    margin-left: 12px;
}